USB Registers
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16.5.1.1 REVREG Register (offset = 0h) [reset = 4EA20800h]
REVREG is shown in Figure 16-22 and described in Table 16-30.
Figure 16-22. REVREG Register
31 30 29 28 27 26 25 24
SCHEME Reserved FUNC
R-1h R-EA2h
23 22 21 20 19 18 17 16
FUNC
R-EA2h
15 14 13 12 11 10 9 8
R_RTL X_MAJOR
R-1h R-0h
7 6 5 4 3 2 1 0
CUSTOM Y_MINOR
R-0h R-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 16-30. REVREG Register Field Descriptions
Bit Field Type Reset Description
31-30 SCHEME R 1h Used to distinguish between legacy interface scheme and current.
0 = Legacy
1 = Current
27-16 FUNC R EA2h
Function indicates a software compatible module family.
15-11 R_RTL R 1h RTL revision.
Will vary depending on release.
10-8 X_MAJOR R 0h
Major revision.
7-6 CUSTOM R 0h
Custom revision
5-0 Y_MINOR R 0h Minor revision.
USBSS Revision Register
1762
Universal Serial Bus (USB) SPRUH73H–October 2011–Revised April 2013
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